Chapter 28 Configuring Etherchannels And Layer 2 Trunk Failover; Understanding Etherchannels - Cisco 3020 - Catalyst Blade Switch Configuration Manual

Configuring EtherChannels and Layer 2 Trunk
Failover
This chapter describes how to configure EtherChannels on Layer 2 ports on the switch. EtherChannel
provides fault-tolerant high-speed links between switches, routers, and servers. You can use it to increase
the bandwidth between the wiring closets and the data center, and you can deploy it anywhere in the
network where bottlenecks are likely to occur. EtherChannel provides automatic recovery for the loss of
a link by redistributing the load across the remaining links. If a link fails, EtherChannel redirects traffic
from the failed link to the remaining links in the channel without intervention.
For complete syntax and usage information for the commands used in this chapter, see the command
Note
reference for this release.
This chapter consists of these sections:
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Understanding EtherChannels

These sections describe how EtherChannels work:
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OL-8915-01
Understanding EtherChannels, page 28-1
Configuring EtherChannels, page 28-8
Displaying EtherChannel, PAgP, and LACP Status, page 28-17
Understanding Layer 2 Trunk Failover, page 28-17
EtherChannel Overview, page 28-2
Port-Channel Interfaces, page 28-3
Port Aggregation Protocol, page 28-4
Link Aggregation Control Protocol, page 28-5
EtherChannel On Mode, page 28-6
Load Balancing and Forwarding Methods, page 28-6
C H A P T E R
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